concentrators的翻译，读音
释义：
(concentrator 的复数) n. 集中者, 浓缩器, 选矿机
[计] 集线器, 集中器
plural of concentrator
n. An apparatus for the separation of dry comminuted
ore, by exposing it to intermittent puffs of air.
[计] 集线器, 集中器
plural of concentrator
n. An apparatus for the separation of dry comminuted
ore, by exposing it to intermittent puffs of air.